Bullying is not just a part of childhood, or some sort of a harmless activity between peers. This is actually something that has very detrimental, and very long lasting effects,” says study author William Copeland of Duke University Medical Center in Durham, North Carolina.

All three groups who reported being involved in bullying experienced some long-term psychiatric effects in the form of anxiety, depressive, or antisocial personality disorders, or some type of alcohol or marijuana abuse.